what that is in some ways is that the reaffirmation, of what in the obama white house was called the light footprint strategy, a strategy moving i way from a focus on these big attritional wars where we send a hundred thousand troops to a country, rewire the nation and after six or seven years discover we haven't done very little other than build recentments there. and more towards the use of america's technological advantage or physical advantage against a smaller group. so there are drone strikes in afghanistan, and in the long run, harmful or helpful. there are cyber strikes of the kind that the book revealed that the united states conducted against iran. and then there's the use of special forces. ultimate light footprint. remember they were in and out of pakistan before the pakistani military even had a chance to respond. >> david in the book you have the chapter, the dark side of the light footprint. you talk about standard that this administration struggled to fashion or new operations including targeted killing. they settled on the notion that a country would have to expressl